Shulou(Shulou.com)06/02 Report--

Abstract: elasticsearch is a widely used distributed search engine. Es provides a single word segmentation tool, and a word segmentation plug-in ik is widely used. Hanlp is a natural language processing package that can better segment words according to context semantics, person names, place names, organizational names, etc.

Elasticsearch

Default participle

Output:

IK participle

Output:

Hanlp participle

Output:

Ik participle does not divide words according to the meaning of the sentence. Hanlp can segment words correctly according to the meaning of the sentence.

Installation steps:

1. Enter https://github.com/pengcong90/elasticsearch-analysis-hanlp, download the plug-in and decompress it to the plugins directory of es, modify the hanlp.properties file under analysis-hanlp directory, modify the attribute of root, and the value is data under analysis-hanlp.

The address of the directory

2. Modify the jvm.options file in the es config directory and add it on the last line

-Djava.security.policy=../plugins/analysis-hanlp/plugin-security.policy

Restart es

GET / _ analyze?analyzer=hanlp-index&pretty=true

{

"text": "Cecilia Cheung cake shop"

}

Test whether the installation is successful

Analyzer has hanlp-index (index mode) and hanlp-smart (smart mode).

Custom dictionary

Modify my dictionary .txt file under plugins/analysis-hanlp/data/dictionary/custom

The format follows the frequency of [word] [part of speech A] [A]

Delete the CustomDictionary.txt.bin file in the same directory after modification

Restart the es service

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